Definition: Given a 'poster' sentence and a corresponding 'response' (often, from Facebook or Reddit)classify the sentiment of the given response into four categories: 1) Positive, 2) Negative, 3) Neutral, and 4) Mixed if it contains both positive and negative.
Input: Poster: Don't forget to watch #Grimm100 tomorrow night! @nbcgrimm  Responser: A town full of zombies couldn't stop me from getting mah Grimm on!!!

Positive